C

n=sqrt(2.311056+0.003592112*pow(x,2)+0.02635349*pow(x,-2)-0.002861817*pow(x,-4)+0.0004429611*pow(x,-6)-2.227926e-05*pow(x,-8))

Python

n=(2.311056+0.003592112*x**2+0.02635349*x**-2-0.002861817*x**-4+0.0004429611*x**-6-2.227926e-05*x**-8)**.5

Fortran

n=SQRT(2.311056+0.003592112*x**2+0.02635349*x**-2-0.002861817*x**-4+0.0004429611*x**-6-2.227926e-05*x**-8)

MATLAB

n=sqrt(2.311056+0.003592112.*x.^2+0.02635349.*x.^-2-0.002861817.*x.^-4+0.0004429611.*x.^-6-2.227926e-05.*x.^-8)

LaTeX

n^2=2.311056+0.003592112λ^{2}+0.02635349λ^{-2}-0.002861817λ^{-4}+0.0004429611λ^{-6}-2.227926\text{×}10^{-05}λ^{-8}